He is known for playing Flip Rose in the American sitcom television series Room for One More.

After freelancing for various studios he was signed to a contract with Warner Bros.. Dapo guest-starred on television programs including The Fugitive, Wagon Train, The Munsters, Cheyenne, The Sheriff of Cochise and The Lucy Show.

[3] In 1962 Dapo starred in the ABC television series Room for One More, in which he played Flip Rose.

[4][5] He also guest-starred as Arnold Winkler in three episodes of the television series The Andy Griffith Show.

[3] In 1964, he was cast as Andy in the situation comedy television series The New Phil Silvers Show.